One of our favorite things about Arrow, besides Stephen Amell of course, is Willa Holland! And although Ollie's little sis Thea is only 21, you may be surprised to find out she's practically a Hollywood vet! Willa dishes to Wonderland magazine about being in show business, and how her career has made her have to deal with a lot of things at such a young age. When she's not acting you can find Willa practicing the Ukulele! She has a new hit on the soundtrack for Pretty Sweet!